Restore the DWR of Your Raingear | The GORE-TEX Brand
Amazon.com : GEAR AID Revivex Durable Water Repellent (DWR) Spray for Waterproofing, Restoring Performance on Nylon Jackets, Gore-TEX, Paddle and Camping Gear, Non-aerosol, 5 oz : Sports & Outdoors
DWR coatings (Durable Water Repellency) and How to Renew It